[AR] Re: Spin stabilized rocket
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: arocket <arocket@xxxxxxxxxxxxx>
- Date: Mon, 24 Dec 2018 21:15:22 -0500 (EST)
On Mon, 24 Dec 2018, David Summers wrote:
With this and a magnetic direction sensor, you could probably get easy
instant direction fixes in 3 axis.
If you're launching in daytime, a sun sensor and a vector magnetometer
definitely suffices, at all altitudes -- a number of our satellites use
that combination for attitude control -- if you avoid times/places where
the Sun axis is lined up with the magnetic field. (Note that the magnetic
field in temperate latitudes generally is *not* horizontal -- normal
compasses are only set up to measure the horizontal component, but that
doesn't mean there isn't a vertical component too.)
Henry
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